Connecting The Cables; Rs-232C Models (Remote) - NCR 7156 Service Manual

Chapter 2: Setting Up the Printer

Connecting the Cables

RS-232C models receive power from a power supply (remote) and use one cable for
communication and a separate cable for power. LCSIO (RS-485) models receive power
from the host computer (integrated) and use one cable for both communication and power.
The next two sections show the connections for both.

RS-232C Models (Remote)

There are three different types of cables that connect to the printer:
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•
•
Caution: Disconnect the power before connecting the cables. Always connect the
communication cable and cash drawer cables before connecting power to the power
supply. Always disconnect power to the power supply before disonnecting the
communication and cash drawer cables.
Follow these steps to connect the cables to the printer and host computer. See the
illustration on the following page.
1.
2.
3.
4.
5.
6.
12
Power supply cable supplying power from the power supply (see "Power
Requirements" in Appendix A for more information about the power supply)
Communication cable connecting the printer to the host computer
Cash drawer cables connecting the printer to one or two cash drawers
Unplug the power supply from its power source.
Connect the power and communication cables to their respective connectors under the
printer as shown in the illustration on the next page.
Be sure to screw the communication cable to the communication connector on the
printer.
Route the cables through the cable clamps on the bottom of the printer, then through
the two slots in the cable access cover as shown in the illustration.
Note: The strain relief bushings are shipped in the box and help secure the cables. The
cable clamps may be shipped in the box or may be attached or molded to the bottom of
the printer. Use the cable clamps or strain relief bushings, or both, to keep the cables
from being unplugged which may damage the connectors or interrupt a transaction.
Connect the communication cable to the appropriate host computer connector.
Connect the cash drawer cables to the printer and cash drawers.
The connectors are standard phone jacks located at the rear of the printer.
Plug the power cord into the power supply, then plug the power supply into an outlet.
The printer goes through a self-test routine to ensure everything is working properly
then "beeps." When the printer has completed its "startup" cycle, it is ready to receive
data. If the printer doesn't start printing, or the host computer indicates that there is a
problem, see "Troubleshooting" later in this book.
September 1998
7156 Service Guide